Japan Post Co. resumed Wednesday accepting airmail packages weighing 453 grams (1 pound) or heavier bound for the U.S. because the carrier now has secured transportation means for such packages.

The company stopped sending such packages Nov. 17 at the request of U.S. aviation authorities as part of antiterrorism steps.

To deliver such packages, Japan Post reportedly has secured cargo airplanes that undergo security checks beforehand.

Japan Post said such packages may take longer than usual to be delivered to destinations in the U.S. due to limited space in cargo airplanes and strengthened security in international parcels.

Its rivals — the Japanese units of Fedex Corp., United Parcel Service of America Inc. and DHL International GmbH — had never stopped accepting such packages.

The U.S. Transportation Security Administration had informed air carriers of the 453-gram rule, and carriers notified Japan Post Services.